SessionContext


1   // ========================================================================
2   // $Id: SessionContext.java,v 1.4 2004/05/09 20:32:27 gregwilkins Exp $
3   // Copyright 1996-2004 Mort Bay Consulting Pty. Ltd.
4   // ------------------------------------------------------------------------
5   // Licensed under the Apache License, Version 2.0 (the "License");
6   // you may not use this file except in compliance with the License.
7   // You may obtain a copy of the License at 
8   // http://www.apache.org/licenses/LICENSE-2.0
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  // ========================================================================
15  
16  package org.mortbay.jetty.servlet;
17  import java.util.Collections  ;
18  import java.util.Enumeration  ;
19  
20  import javax.servlet.http.HttpSession  ;
21  import javax.servlet.http.HttpSessionContext  ;
22  
23  /* ------------------------------------------------------------ */
24  /** 
25   * Null returning implementation of HttpSessionContext
26   * @version $Id: SessionContext.java,v 1.4 2004/05/09 20:32:27 gregwilkins Exp $
27   * @author Greg Wilkins (gregw)
28   */
29  public class SessionContext implements HttpSessionContext  
30  {
31      /* ------------------------------------------------------------ */
32      public static final HttpSessionContext   NULL_IMPL = new SessionContext();
33  
34      /* ------------------------------------------------------------ */
35      private SessionContext(){}
36      
37      /* ------------------------------------------------------------ */
38      /**
39       * @deprecated From HttpSessionContext
40       */
41      public Enumeration   getIds()
42      {
43          return Collections.enumeration(Collections.EMPTY_LIST);
44      }
45  
46      /* ------------------------------------------------------------ */
47      /**
48       * @deprecated From HttpSessionContext
49       */
50      public HttpSession   getSession(String   id)
51      {
52          return null;
53      }
54  }
55
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